SUNRPC: lock against ->sock changing during sysfs read
Priority LOW 34CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 4 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: lock against ->sock changing during sysfs read ->sock can be set to NULL asynchronously unless ->recv_mutex is held. So it is important to hold that mutex. Otherwise a sysfs read can trigger an oops. Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before handling sysfs reads") appears to attempt to fix this problem, but it only narrows the race window.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00285 21st percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.271, 5.14, 5.15.209 +2Red Hat: 2 advisoriesRed Hat: 4 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.10.67 to before 5.10.271; 5.13.19 to before 5.14 | 5.10.271, 5.14 | Patch available | CNA |
| Linux | Linux | 5.14 and later | 5.10.271, 5.15.209, 5.16.10, 5.17 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.67 to before 5.10.271; 5.13.19 to before 5.14 Fixed in 5.10.271, 5.14 Patch available CNA
- Linux VendorLinux Affected 5.14 and later Fixed in 5.10.271, 5.15.209, 5.16.10, 5.17 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.10.67 to before 5.11; 5.13.19 to before 5.16.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* | 5.17 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* | 5.17 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* | 5.17 rc3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.67 to before 5.11; 5.13.19 to before 5.16.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* Versions 5.17 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* Versions 5.17 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* Versions 5.17 rc3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.14
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.209, 5.16.10, 5.17
Red Hat 2 advisories
- RHSA-2024:6991 Released 2024-09-24 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.117.1.el9_0, kernel-debug-devel-matched-5.14.0-70.117.1.el9_0, kernel-devel-5.14.0-70.117.1.el9_0 +5
- Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.117.1.el9_0, kernel-5.14.0-70.117.1.el9_0, kernel-abi-stablelists-5.14.0-70.117.1.el9_0 +14
- RHSA-2024:6990 Released 2024-09-24 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-core-5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-debug-5.14.0-70.117.1.rt21.189.el9_0 +9
- Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-core-5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-debug-5.14.0-70.117.1.rt21.189.el9_0 +7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2024:6991 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.0) | Fixed | RHSA-2024:6991 |
| Red Hat Enterprise Linux NFV E4S (v.9.0) | Fixed | RHSA-2024:6990 |
| Red Hat Enterprise Linux Real Time E4S (v.9.0) | Fixed | RHSA-2024:6990 |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48816
- 2026-10-03 Alias added: GHSA-9wm5-v97c-mv82
- 2026-10-03 Fix available: Linux/[email protected], Linux/Linux@cd366b9091a3e6ed8229e4b908e895d20b527dc0 · CNA
- 2026-10-03 1 new reference · CNA
References
Patch 2
More Linux Kernel vulnerabilities
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- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2022-48816 · CVE Program
- CVE-2022-48816 · NVD
- FIRST EPSS
- GHSA-9wm5-v97c-mv82 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48816 · Red Hat security data · CC BY 4.0
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